Coincidently I was thinking about car wash just few days back, One was bought in 2014, never car washed seems fine so far. Another was bought in 2022 again no wash so far and no plan to.

I used to think everyone does it, I will do at some point but that point never came. Inside we vacuum and wipe every few months. Washed mats once in an year or so but car body wash rain takes care of it.